ssh X11 forwarding not working on FreeBSD 6.2

[Pollywog]

On Tuesday 24 July 2007 18:30:59 Lowell Gilbert wrote:
> I would guess that it's an xauth(1) problem.
> Make sure that XAuthLocation is set ,in sshd_config(5), to the right
> path for the xauth executable (probably /usr/local/bin/xauth, if
> you've done the update to X.Org 7.2.
>
> That's just a shot in the dark, though; the most certain way of
> finding the problem is to increase the verbosity of sshd's logging,
> and see what it thinks is wrong.

Indeed, setting XAuthLocation is what allowed me to connect FROM fbsd to Linux 
but I still can't connect from Linux to my FreeBSD computer.